Passaic-class monitor

USS Lehigh on the James River
Class overview
Builders
Preceded byUSS Monitor
Succeeded byCanonicus class
SubclassesUragan class
In commission25 November 1862 – 1899
Completed10
Lost2
General characteristics
TypeMonitor
Displacement1,335 tons
Tons burthen844 (bm)[1]
Length200 ft (61 m) overall
Beam46 ft (14 m)
Draught10 ft 6 in (3.20 m)
Propulsion2 Martin boilers, 1-shaft Ericsson vibrating lever engine, 320 ihp (240 kW)
Speed7 knots (13 km/h; 8.1 mph)
Complement75
Armament
  • 1 × 15-inch (380 mm) smoothbore Dahlgren gun
  • 1 × 11-inch (280 mm) smoothbore Dahlgren gun
  • Lehigh, Patapsco:
  • 1 × 15-inch (380 mm) smoothbore Dahlgren gun
  • 1 × 8-inch (200 mm) Parrott rifle
  • Camanche:
  • 2 × 15-inch (380 mm) smoothbore Dahlgren guns
Armor
  • Iron
  • Side: 3–5 in (76–127 mm)
  • Turret: 11 in (280 mm)
  • Deck: 1 in (25 mm)

The Passaic-class ironclad monitors of the U.S. Navy saw service in the U.S. Civil War and the Spanish–American War. The class was an improved version of USS Monitor equipped with a 15-inch Dahlgren gun in place of one of the 11-inch guns.[2]

  1. ^ Silverstone, p. 5
  2. ^ Silverstone, p. 5